1" UNC Carbon Steel Circular Split Dies Thread - UNC Coarse Size - 1" external round die size Carbon steel for cleaning out threads UK Made ABC 1/4" 1" 20 5/16" 1" 18 3/8" 1" 16 7/16" 1" 14 1/2" 1" 13 Please Note: Specifications given are... £7.34 (Inc. VAT) £6.12 (Ex. VAT) Choose Options Compare